Automatic brake-setting device.



H. R. NEVENS.

AUTOMATIC BRAKE SETTING DEVICE.

APPLICATION FILED APR. 12. 1912.

- Patented Feb. 29, 1916.

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UNITED STATES PATENT OFFICE.

HERBERT RUSSELL NEVENS, OF EAST HARTFORD, CONNECTICUT, ASSIGNOR T0NEVENS-WALLACE TRAIN CONTROL COMPANY, A CORPORATION OF MASSA- cnusnr'rs.

AUTOMATIC BRAKE-SETTING DEVICE. v

Patented Feb. 29, 1916.

' Application filed Apri1 12, 1912. Serial No. 690,447.

To all whom it may concern:

Be it known that I, HERBERT R. NEVENS, a citizen of the United States,residing at East Hartford, county of Hartford, State of Connecticut,have invented certain new and useful Improvements in AutomaticBrake-Setting Devices, of which the following is a specification.

This invention relates to train stops, and

particularly to devices for setting the brakesof atrain through themedium of a portable-track plate.

In my original application, Serial No. 634,010, filed June 19, 1911, Iset forth, to-

gether with the features of the track plate,

certain novel tripping and brake setting features which are to beclaimed therein.

My present application, therefore, relates more particularly to theportable track plate device by which atrain may be stopped atany desiredpoint with absolute certainty and wholly independent of the attention.or inattention of the engineer in the cab.

My present invention involves more particularly the problem of actuatinga tripper.

located behind a wheel.

The construction and operation of my device I will be more fully setforth in the specification which follows.

,In the drawings I have shownas an illustrative embodiment a. formofdevice which I find well adapted to practical means.

Throughout specification and drawings like referencenumerals areemployed to indicate corresponding parts and in the drawings:-Figure 1is a view showing a wheel with a tripping device set behind it, a railand a track late on the rail in advance of the wheel, Fig. 2 is a planview of the track plate and a fra ent of the rail, Fig. 3 is a sectionon the l1ne 33, Fig. 2, Fig. 4 is an enlarged viewof my track plate seton a rail, Fig. 5 is a fragmentary detail showing one end of the trackplate, and Fig. 6 is a view of the flange engaging dog of my track plateremoved.

As described in my prior application, my tripping device is mounted onbrackets 1 bolted to'the frame of a pony truck, or any other convenienttruck on a locomotive tender or car. On the brackets 1 are bearingsrectly behind the wheel W and over the rail 4.

-.My portable track plate consists of a central portion 6 adapted to lieon the tread of the rall and terminating in tapering ends 5, 5.'Depending from the plate 6 are 'marginal flanges 6 which hang downbelow the tread of the rail. On these flanges 6 are set studs .9 and 10.A. leaf spring 7 spans these studs, being pivotally connected at 9 andpivotally and slidably connected at 10 through a slot. The plate 6 andthe flanges 6 are cut away at the center of the plate to form an openingor gap. A small lip 11 is turned up at one side of this opening to actas a stop for the spring 7 so that it will bear against it somewhatunder pressure to hold. the parts steady. Within this opening of theplate a bridge-piece 8 is set which spans.

the rail and rests with its ends on. the two fsprings 7 which normallyhold the cross one end of the flanges 6 an ear is struck up w to whichis pivoted a latch piece12 having a fold '12 surrounding the ear, towhich it is attached by a pivot 13. In placing the plate 6 .upon therail the latches 12 will be drawn up, but as soon as the flanges of therail are passed they will drop-down, as shown in Fig. -1, thus lockingthe plate on the rail so that it can not be thrown or tripped ofl' whenstruck by the wheel W.

The track plate 6 in operation is carried back by the flagman whenever atrain is brought to a standstill. If an oncoming engineer fails tosignal his recognition of the flagmans warning, the plate 6 is slippedon the track, preferably adjacent to a rail joint. In running over thisplate the wheel W bears down on the bridge 8, but as soon as the wheelhas passed the bridge the plate 8 is drawn up again in time t0-catch thetripper 3 and set the brakes.

While I" have discussed and claimed my invention in the terms of itsapplication to the present railway system, it will be understood that itmay be applied to any system and operation; of my device may obviouslybe made, all without departing from the spirit of my invention if withinthe limits of the appended claims.

What I, therefore, claim and desire to secure by Letters Patent is 1. Atrack obstacle for actuating a train carried trip located behind a wheeland over a rail comprising a portable track plate adapted to be appliedto the rail tread, and a movable tripper resiliently supported on saidplate across said tread and depressible.

under a wheel to return in time to actuate the train carried triplocated behind said wheel.

2. A device for automatically setting air brakes for railroad trainscomprising a rail plate adapted to be applied to the rail tread,depending lateral flanges thereon, resilient members on said lateralflanges and a yielding tripping membersupported on said resilientmembers.

3. A track obstacle for actuating a train carried trip located behind awheel and over a rail comprising a rail plate adapted to be applied tothe rail tread, means for detachably connecting said plate in place, andresilient tripping means on said plate normally disposed above the railtread and de pressible under a wheel to return in time to actuate thetrain carried trip located behind said wheel.

4. A device for automatically setting air brakes for railroad trainscomprising a rail plate adapted to be applied to the rail tread, saidplate being centrally opened, a resilient supporting member on each sideof said plate and a tripper extending across said opening and supportedby said resilient members.

5. A portable device for automatically setting air brakes for railroadtrains comrising a rail plate adapted to be applied to the rail tread,lateral depending flanges thereon, rail engaging dogs on said flangesand yielding tripping means on said plate.

6. A portable device for automatically setting air brakes for railroadtrains comprising a rail plate adapted to be, applied to the rail tread,and having an opening therein and a tripper yieldingly supported abovesaid plate and depressible within said opening by a wheel in passing butreleasable immediately upon the passage'of the wheel. p

7. A track obstacle for actuating a train carried trip located behind awheel comprising a portable track plate adapted to be applied to a railtread, a movable tripper on said plate depressible under a wheel and ayieldable support for said tripper normally effective to hold it abovesaid tread and efl'ective upon depression of the tripper to return saidtripper in time to actuate the train carried trip located behind saidwheel.

8. A device for automatically setting air brakes for rail road trainscomprising a rail plate .adapted to-be applied to a rail tread, meansfor positively locking said plate to said rail, tripping means on saidplate depressible under a wheel and a resilient support normallyeffective to hold said tripp ng means in trippin position and efiectlveupon depression 0? said tripping means to return said means in time toactuate the train carried trip located behind said wheel.

9. -A track obstacle for actuating a train carried trip located behind awheel comprising a track plate adapted to engage the tread of a rail, atripper on said plate depressible under a Wheel, and a resilient supportfor said tripper pivotally connected to said track plate near one endand having a pivotal and slidin engagement with said plate at its otheren said support normally efiective to hold said tripper in trippingposition and effective upon depression of said tripper to return it intime to actuate the train carried trip located behind said Wheel.

10. A track obstacle for actuating a train carried trip located behind awheel comprising a track plate adapted to engage the tread of a rail, atripper bridging said tread and -a resilient support for said trippercarried by said plate, said support permitting said bridge to bedepressed by a wheeland effective to return said bridge to tripactuating position as soon as the wheel passes.

11. A track obstacle for actuating a train carried trip located behind awheel comprising a track plate adapted to movably engage the tread of arail and carrying a tripper yieldable upon actuation by the wheel of atrain roceeding in either direction of travel, said tripper beingreturned after depression thereof by a wheel in time to actuate thetrain carried trip located behind said wheel.

12. A portable track obstacle for actuating av train carried tripcomprising a rail engaging member, a trip abtuating member supportedupon said rail engaging member and depressible by a train wheel inpassing but returnable immediately upon the passage of said wheel toactuate the train carried trip, and means for effecting said return.

In testimony whereof I aflix my signature in presence of two Witnesses.

HERBERT RUSSELL NEVENS.

Witnesses:

J OSEPH BARR, PERCY W. Lyons.

